Accidentally applied 12VDC input to the 5VDC output pin...

jonisonvespa:
if your as tight as me id order a new chip, make sure it comes with a bootloader already installed

at if it doesnt work at least you have a spare, or if you feel brave make a bare bones board yourself

(i do have 4 168 new blank chips for sale, no bootloader installed if anybody wants them ok only)

Yes But if you read the first post you will see the OP has a Mega, so chip replacement is not much of an option.